APA (7th ed.) Citation

Pagels, H. R. (1985). Perfect symmetry: The search for the beginning of time. Simon & Schuster.

Chicago Style (17th ed.) Citation

Pagels, Heinz R. Perfect Symmetry: The Search for the Beginning of Time. New York, NY: Simon & Schuster, 1985.

MLA (9th ed.) Citation

Pagels, Heinz R. Perfect Symmetry: The Search for the Beginning of Time. Simon & Schuster, 1985.